Coffee drinkers aren’t the only ones getting a brain boost from a little caffeine. The drug improves honeybees’ long-term memory, a new study shows. Bees are more likely to remember flowers that had caffeine in their nectar.

“This is the first instance to show that something we use as a drug is also a drug ecologically,” Geraldine Wright told Science News. By ecologically, she means wildlife also get a jolt from caffeine. Wright, who led the new study, investigates animal brains and behav...